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just olya [345]
3 years ago
8

A student measures the mass and volume of a sample of aluminum at room temperature, and calculates the density of Aluminum to be

2.85 grams per cubic centimeter. Based on Table S, what is the percent error for the student’s calculated density of Aluminum?
Chemistry
2 answers:
erma4kov [3.2K]3 years ago
3 0

Answer:

From Table S you will take the value of S and then you will subtract (Table S Value-2.85) then divide by Table S value. After you will multiply by 100 to get percent.

Explanation:

efsa 2 years ago
0 0

5.6 is the answer to it

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What is the concentration of the hydroxide ion? Given that the concentration of the hydronium ion is 2.3 X 10^-7 M
professor190 [17]

Answer:

4.35 * 10^-8 M

Explanation:

Since the concentration of the hydronium ion= 2.3 X 10^-7 M

And we know that;

[H3O^+] [OH^-] = 1 * 10^-14

[H3O^+]  = concentration of the hydronium ion

[OH^-] = concentration of the hydroxide ion

So;

[OH^-] =1 * 10^-14/[ H3O^+]

But [H3O^+] = 2.3 X 10^-7 M

[OH^-] = 1 * 10^-14/2.3 X 10^-7

[OH^-] = 4.35 * 10^-8 M

8 0
2 years ago
What is AgNO3 + KCI-KNO3+AgCI. What type of reaction does this represent
PIT_PIT [208]
<span>C4H10 + 6.5 O2 ----> 4CO2 + 5H2O 

2C4H10 + 13 O2 ----> 8CO2 + 10H2O 

1. Count the C on the left (4), put a 4 where the C on the right. 

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4. Now multiply everything on the equation by two so you have nice integer numbers. 

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6 0
3 years ago
Aluminum metal reacts with dilute sulfuric acid to produce aluminum sulfate and hydrogen gas. what mass of aluminum will react w
SOVA2 [1]
Aluminium reacts with dilute sulfuric acid based on the following reaction:
<span>2Al + 3H2SO4 ..............> Al2 (SO4)3 + 3H2

From the periodic table:
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From the balanced chemical equation:
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To get the amount  of aluminium that reacts with </span><span>5.890 g of sulfuric acid, we will do cross multiplication as follows:
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3 0
3 years ago
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GREYUIT [131]

Answer:

13

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